Helminthofauna of mouse rodents and helminthe parasitism Hymenolepis horrida, Linstow, 1901

In forest and forest-steppe biocenoses, mouse-like rodents are one of the leading groups in terms of number and species diversity. Performing the functions of consults of the first and second orders in the food chain, rodents play a role in the circulation of helminths as intermediate and main hosts, besides, with their participation, especially dangerous natural focal invasions are maintained. In modern practice, the existing focal infestations also actively circulate in natural biocenoses, and the vast territory of Yakutia is no exception. Permafrost and a particularly low temperature regime in the region could contribute to the death of the invasion, but many types of helminths, their eggs and larvae maintain their active state in the harsh climatic conditions of Yakutia, sometimes have a pronounced tendency to spread and form extensive natural foci. Of particular interest is the study of the helminthofauna of mouse-like rodents characteristic of this region. The material for this article was the study of the helminth fauna. As a result of the study of complex parasitological fees for 2018-2021. on the territory of the Central Part of the Republic of Sakha (Yakutia), 1,373 individuals belonging to nine species of mouse-like rodents were studied. The authors processed and analyzed the original materials and the data obtained show that the 30 helminth species found belong to 5 genera and to four classes Trematoda Rudolphi, 1808, Cestoda Rudolphi, 1900, Nematoda Rudolphi, 1808 and Archiacanthocephala, Meyer, 1931.